Electric heating apparatus for metal-working machines



F. P. KOBERT.

ELECTRIC HEATING APPARATUS FOR METAL WORKING MACHINES.

APPLICATION FILED APR. 5. 1911. RENEWED JUNE 25. 1919.

1,330,477 I Patented Feb. 10, 1920.

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UNITED STATES @ENT OFFICE,

FRANK P. KOBERT, 0F AMITYVILLE, NEW YORK.

ELECTRIC HEATING APPARATUS FOR METAL-WORKING MACHINES.

Application filed April 5, 1917, Serial No. 159,853. Renewed To all whom it may concern.

, Be it known that I, FRANK P. KOBERT, a citizen of the United States, and residing at Amityville, L. 1., in the county of Suffolk and State of New York, have invented certain new and useful Improvements in Electric Heating Apparatus for Metal-VVorking Machines, of which the following is a specification, such as will enable those skilled in the art to which it appertains to make and use the same.

This invention relates to electric heating apparatus for metal working machines such as forging machines, electric riveting machines, electric welding machines and other apparatus of this class, and the object of the invention is to provide improved means for heating the metal or workpiece fed into the machines in order to facilitate the operation of such machines; and with this and other objects in view the invention consists in an electric heating apparatus of the class specified. constructed and operating as hereinafter described and claimed.

The invention described and claimed in this application covers an improvement on the construction shown, described and claimed in a companion application filed April 5, 1917, Ser. No. 159,852, and the construction shown, described and claimed in this application is also adapted for use in connection with the machine shown, described and claimed in a prior application filed by me November 18, 1896, Serial No. 132,003, said machine being what is known in the art as a heading, re-heading, upsetting and forging machine, and the electric heating apparatus forming the basis of this application is an improvement on that shown in said prior application, and said companion application, such improvements being hereinafter fully described and claimed.

The invention forming the basis of this application is fully disclosed in the following specification, of which the accompanying drawing forms a part, in which the separate parts of my improvement are designated by suitable reference characters in each of the views, and in which- Figure 1 is a diagrammaticand sectional view of m improved electric heating apparatus;

Fig, 2 a partial section of Fig. 1; and,

Fig. 3 a pa-rtlal section on the line 3-3 of Fig. 1.

on the line 2-2 Specification of Letters Patent.

Patented Feb. 10, 1920.

June 25, 1919. Serial No. 306,660.

In the drawing, I have indicated at a, a wire or rod fed into the machine by the usual feed rollers b, and in the practice of my invention, said wire or rod a as it is fed into the machine is adapted to be heated by an electric heating apparatus 0 prior to the placing of said .tion to be operated upon by suitable forming elements not shown.

My improved heating of two supports d and e adjustably mounted on guide rods or bars g which pass through the end portions of t e supports d and e, and said supports are held in any desired position of adjustment on the rods f by means of set screws P. The supports d and e apparatus 0 consists rod in line with, or in posiand the apertures (Z tion of the support (l opposite to the end portion of the support 6 having the aperture a as clearly noted in Fig. 1 of the drawing. At right angles to the apertures d and e are other elongated apertures (Z and e as clearly shown in Fig. 1.

Adjustably mounted in the supports d and e, or the apertures (Z and 6 thereof are L-shaped blocks and h, the shank portions and h of which operate in the apertures (Z and e and bolts 3 are passed through the apertures (l and c and the shanks g and h of the L-shaped blocks 9 and h, whereby said blocks are made adjustable in said supports as will be readily understood.

Pivoted to the opposite end portions of the supports (Z and a in which the L-shaped blocks 9 and h are mounted. are contact casings e' and j, the pivotal connections of which consists of pins or bolts 7 secured to the.

supports (Z and e and insulated therefrom as shown at f. The contact casings z and j are provided with projecting pins 71 and 7' on which are rotatably mounted electrodes 2' and which are held in firm contact with the casings i and j by springs z" and j, the tension of which may be regulated by nuts i and i mounted on the pins 2' and j I also employ the usual electric transformer is placed in electric communication with any source of electrical supply through a switch late 70 to which main circuit wires 70 and k are connected, one of said wires communicating with the transformer is through a wire k and the other of which connects with a switch arm 70 adapted to make contact with a plurality of contacts 76' with which wires 70 are connected, said wires being in the end por- [68 being also connected with the transformer is. The transformer 70 is also provided with the usual leads m and m the lead m being connected with the contact casing 2', while the lead m is connected with the contact casing 7', as clearly shown in Fig. 1 of the drawing.

The contact casings a' and j are provided with intake and discharge pipes or tubes or and n by means of which water may be circulated therethrough to cool the rotatable electrodes. The transformer 7 is also provided wit-h intake and discharge pipes or tubes 71. and a whereby water may be circulated therethrough to cool the same.

The rotatable electrodes 2' and f or the periphery thereof, are provided with V- shaped grooves 11 and j", and the L-shaped blocks 9 and h, or the faces thereof, are provided with similar grooves and h whereby the wire or rod a, or material to be heated may be passed between the arms gh and rotatable electrodes 11 and 7' as will be readily understood, and the arm h, or the recess k therein, is preferably enlarged at one end as shown at k to permit of the above operation.

Springs 0 are connected with the arms 9 and h at 0 and with th contact casings and j at 0 and insulated therefrom, and these springs serve to hold the rotatable electrodes 2' and j in firm contact with the material passed therebetween.

From the foregoing description and the accompanying drawing, it will be noted that the material (1,, as shown in Fig. 1, or in the form of a wire or rod, is fed into my improved heating apparatus by the rollers b in which event said material passes between the arm 9 and the electrode 2' and the arm h and electrode 7', and then into the machine or suitable forming elements, and when the current is turned on by meansof the switch device 70 or the manipulation of the switch arm 70 the material between the electrodes i and j is heated in approximately a diagonal line due to the diagonal location of said electrodes on the opposite sides of said material.

By adjusting the supports (l and e the amount of material heated may be varied as will be readily understood, and by adjusting the L-shaped blocks 9 and h in said supports, material of varying thicknesses or sizes may be heated as will be also understood, and while I have shown and described my improved heating apparatus for heating a wire or rod, in which event disk-shaped electrodes are employed it will be understood that my invention is not limited to theform or construction of electrodes employed, nor to the form or dimensions of material to be heated, and sheets or strips of metal may be heated in the same manner as the wire or rod, as shown and described herein, the chief feature of this invention residing in the mounting of two electrodes in different horizontal and vertical planes, or in diagonally opposite positions on the opposite sides of material to be passed therebetween and to be heated by passing an electric current through said electrodes and said material, and providing means whereby material of varying thicknesses may be passed between said electrodes.

It will be understood that the rods or bars 7', on which the supports (Z and e are adjustably mounted, form a part of the frame of the machine in connection with which my improved heating apparatus is employed, but said heating apparatus may be mounted in, or supported in connection with the machine, or the framework thereof, in any desired manner within the limitations herein set out, and other changes in and modifications of the construction herein described may be made, within the scope of the appended claims, without departing from the spirit of my invention or sacrificing its advantages.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent, is i 1. A heating apparatus of the class described, comprising two'electrodes mounted in diagonally opposite positions, and on opposite sides of material passed therebetween, said electrodes being adjustable toward and from each other whereby the amount of material to be heated may be varied.

2. A heating apparatus of the class described, comprising two rotatable electrodes, said electrodes being mounted independently of each other and in diagonally opposite positions longitudinally of and on opposite sides of the pathway of the material passed therebetween.

3. A heating apparatus of the class described comprising two electrodes mounted in diagonally opposite positions longitudinally of and on opposite sides of the pathway of the material passed therebetween, means for regulating the degree of heat applied to the material passed between said electrodes, and means for holding said electrodes in firm contact withsaid material.

4. A heating apparatus of the class described, comprising two electrodes mounted in diagonally opposite positions longitudinally of and on opposite sides of the pathway of the material passed therebetween, and means involving tensional devices for holding said electrodes in firm contact with said material.

5. A heating apparatus of the class described, comprising two electrodes mounted in diagonally opposite positions longitudinally of and on opposite sides of the pathway, of the material passed therebetween, means involving tensional devices for holding said electrodes in firm contact with said material, means for regulating the degree of heat applied to the material passed between said electrodes, and means for water-cooling said electrodes.

6. A heating apparatus of the class described, comprising two electrodes mounted in diagonally opposite positions and on opposite sides of material passed therebetween, and means involving tensional devices for holding said electrodes in firm contact with said material, said electrodes being adjustable toward and from each other whereby the amount of material to be heated may be varied.

7. A heating apparatus of the class described, comprising two electrodes mounted in diagonally opposite positions and on opposite sides of material passed therebetween, and means involving tensional devices for holding said electrodes in firm contact with said material, said electrodes being adjustable toward and from each other whereby the amount of material to be heated may be varied, and means for water-cooling said electrodes.

8. A heating apparatus for metal working machines, comprising electrodes mounted in diagonally opposite positions longitudinally of and on opposite sides of the pathway of the material passed therebetween.

9. In an electric heating apparatus for metal working machines, feeding devices mounted therein, and heating devices mounted rearwardly of said feeding devices and comprising two electrodes mounted in diagonally opposite positions longitudinally of and on opposite sides of the pathway of the material passed therebetween.

10. In an electric heating apparatus for metal working machines, means for feeding material into the machine; means for heating said material as it is fed into the machine, comprising two roller electrodes mounted in diagonally opposite positions longitudinally of and on opposite sides of the pathway of said material, and means involving tensional devices for holding said electrodes in firm contact with said material.

11. In an electric heating apparatus for metal working machines. means for feeding material into the machine. means for heating said material as it is fed into the machine, comprising two roller electrodes mounted in diagonally opposite positions longitudinally of and on opposite sides of the pathway of said material. means involving tensional devices for holding said electrodes in firm contact with said material, and means for water-cooling said electrodes.

12. In an electric heating apparatus for metal working machines, means for feeding materialinto the machine, means for heating said material as it is fed into the electrical connection therewith and between which material to be heated passes, said electrodes being arranged in diagonally opposite positions longitudinally of and on opposite sides of the pathway of said material, and means for water-cooling said electrodes and said transformer.

14. A heating apparatus comprising an electric transformer and two electrodes in electrical connection therewith and between which material to be heated passes, said electrodes being arranged in diagonally opposite positions longitudinally of and on opposite sides of the pathway of said material, means for water-cooling said electrodes and said transformer, and means for regulating the degree of heat applied to the material passed between said electrodes.

15. An electric heating apparatus of the class described, comprising two supports mounted to permit of their adjustment toward and from each other, electrical conducting members movably mounted on said supports, electrodes mounted in said conducting members, and tensional means for holding said electrodes in firm contact with said electrical conducting members.

16. An electric heating apparatus of the class described, comprising twosupports mounted to permit of their adjustment toward and from each other, electrical conducting members movably mounted on said supports, rotatable electrodes mounted on said conducting members, tensional means for holding said electrodes in firm contact with said electrical conducting members, said electrodes being arranged in diagonally opposite positions and on opposite sides of material passed therebetween, and means involving tensional devices for holding said electrodes in firm contact with said material.

17 An electric heating apparatus of the class described, comprising two supports mounted to permit of their adjustment toward and from each other, electrical conducting members movably mounted on said supports. rotatable electrodes mounted on said conducting members, tensional means for holding said electrodes in firm contact with said electrical conducting members, said electrodes being arranged in diagonally opposite positions and on opposite sides of material passed therebetween, and means adjustably mounted in said supports and adapted to cooperate with said electrodes whereby said electrodes may be held in firm contact with said material.

18. An electric heating apparatus of the class described, comprising two supports mounted to permit of their adjustment toward and from each other, electrical con ducting members movably mounted on said supports, rotatableelectrodes mounted on said conducting members, tensional means for holding said electrodes in firm contact with said electrical conducting members, said electrodes being arranged in diagonally opposite positions and on opposite sides of material passed therebetween, and means adjustably mounted in said supports and adapted to cooperate with said electrodes whereby said electrodes may be held in firm contact with said material, said electrodes being insulated from said supports and said last named means.

19. An electric heating apparatus of the class described, comprising two supports mounted to permit of their adjustment toward and from each other, electrical conducting members movably mounted on said supports, rotatable electrodes mounted on said conducting members, tensional means for holding said electrodes in firm contact with said electrical conducting members, said electrodes being arranged in diagonally opposite positions and on opposite sides of material passed therebetween, means adjustably mounted in said support and adapted to cooperate with said electrodes whereby said electrodes may be held in firm contact with said material, and means for watercooling said electrodes.

20. An electric heating apparatus of the class described, comprising two supports mounted to permit. of their adjustment toward and from each other, electrical conducting members movably mounted on said supports, rotatable electrodes mounted on said conducting members,tensional means for holding said electrodes in firm contact with said electrical conducting members, said electrodes being arranged in diagonally opposite positions and on opposite sides of material passed therebetween, means adjustably mounted in said support and adapted to cooperate with said electrodes whereby said electrodes may be held in firm contact with said material, means for watercooling said electrodes, and means for regulating the degree of heat applied to the material passed between said electrodes.

21. A heating apparatus involving an electric transformer and electrodes mounted in diagonally opposite positions and on opposite sides of material passed therebetween, means for adjusting said electrodes toward and from each other, means for regulating the degree of heat applied to said electrodes, and means for water-cooling said electrodes and said transformer.

22. In an electric heating apparatus for metal working machines, main feed rollers mounted to feed material into the machine, supporting frames mounted to permit of the adjustment thereof toward and from each other, electrodes pivotally mounted on said frames, and means involving tensional devices for holding said electrodes in firm contact with material passed therebetween.

23. A heating apparatus of the class described, comprising two adjustably mount ed supports, electrical conducting members mounted on said supports, electrodes mounted on said conducting members, and means for holding said electrodes in firm contact with said conducting members.

24. A heating apparatus of the class described, comprising two adjustably mount ed supports, electrical conducting members pivotally mounted on said supports, electrodes rotatably connected with said conducting members, tensional means for hold ing said electrodes in firm contact with said conducting members, and means involving tensional devices for holding said electrodes in firm contact with material fed through said apparatus to facilitate the heating of said material.

25. A heating apparatus of the class described, comprising two adjustably mounted supports, electrical conducting members pivotally mounted on said supports, electrodes rotatably connected with said conducting members, tensional means for bold ing said electrodes in firm contact with said conducting members, means involving tensional devices for holding said electrodes in firm contact with material fed through said apparatus to facilitate the heating of said material, and means for water-cooling said electrodes.

In testimony that I claim the foregoing as my invention I have signed my name in pres ence of the subscribing witnesses this 4th day of April, 1917.

FRANK P. KOBERT.

Witnesses:

C. E MULREANY, H. E. THOMPSON. 

